flow coefficient?

judgment_arms · Sat Oct 28, 2006 7:59 pm

Say, what I is the flow coefficient of a 3” coaxial piston valve?
I need to know for GGDT. Thanks all for answering all my questions.

SpudStuff · Sat Oct 28, 2006 8:02 pm

Do you have a cronie? Otherwise i'd say 30 - 40%.

judgment_arms · Sat Oct 28, 2006 8:05 pm

No but I wish I did. Do ya know where I can get a cheep cronie? thanks

SpudStuff · Sat Oct 28, 2006 8:08 pm

They usually run about $70-120

judgment_arms · Sat Oct 28, 2006 8:14 pm

ya well I’m to cheep to pay that much. Guess I’d better start look at the flea market.

schmanman · Sat Oct 28, 2006 8:21 pm

but where do you get them (a site would be nice). I will go check ebay now.

frankrede · Sat Oct 28, 2006 8:24 pm

Paintball stores sell chronies.

SpudStuff · Sat Oct 28, 2006 8:24 pm

www.Froogle.com, THE best place to look for a product.

schmanman · Sat Oct 28, 2006 8:37 pm

ok, thanks. how much do they go for at paintball stores?

boilingleadbath · Sat Oct 28, 2006 8:40 pm

Generaly, I use about 50% for coaxial piston valves.

I don't know how accurate that is, and it's not exactly backed up by crono data... but 30% is way too low, and the HVPL-01 is giving me numbers in that vicinity. (samewhere between 55 and 80some%)

POS · Tue Oct 31, 2006 8:19 am

what does that flow coefficient mean ? Dont understand ...

SquishY · Tue Oct 31, 2006 2:17 pm

I was wondering this last night, when I put in a higher number it says that it's optimistic but is 100 an achievable if this is how much flow is there with out using a burst disk.

boilingleadbath · Tue Oct 31, 2006 2:59 pm

Squishy, I'm pretty sure that even a strait section of pipe has a flow coef. lower than 100%.

joannaardway · Tue Oct 31, 2006 3:59 pm

As I said in the other topic, it's about 65% for straight pipe.

What 100% represents, I don't know.

POS · Tue Oct 31, 2006 4:25 pm

O, but WTH does it mean ?